Document what the new default_headers will be [ci skip]
Document what the new default_headers will be [ci skip]

rails/rails,kddeisz/rails,BlakeWilliams/rails,yahonda/rails,MSP-Greg/rails,kddeisz/rails,rails/rails,Erol/rails,Edouard-chin/rails,yahonda/rails,kmcphillips/rails,BlakeWilliams/rails,georgeclaghorn/rails,Erol/rails,yahonda/rails,Edouard-chin/rails,BlakeWilliams/rails,rails/rails,yawboakye/rails,esparta/rails,Erol/rails,esparta/rails,Edouard-chin/rails,rails/rails,kmcphillips/rails,kddeisz/rails,yawboakye/rails,georgeclaghorn/rails,esparta/rails,yawboakye/rails,BlakeWilliams/rails,MSP-Greg/rails,MSP-Greg/rails,kddeisz/rails,yahonda/rails,Edouard-chin/rails,MSP-Greg/rails,yawboakye/rails,georgeclaghorn/rails,kmcphillips/rails,kmcphillips/rails,georgeclaghorn/rails,Erol/rails,esparta/rails